linux-kernel - Re: [PATCH][for 2.6.28] Remove -mno-spe flags as they dont belong

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Message-Id: <A84F59D4-E594-4C31-B881-B35B93DBDB97@kernel.crashing.org>
Date:	Mon, 17 Nov 2008 08:33:30 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Steven Rostedt <srostedt@...hat.com>
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	Andrew Morton <akpm@...l.org>,
	Linus Torvalds <torvalds@...l.org>
Subject: Re: [PATCH][for 2.6.28] Remove -mno-spe flags as they dont belong


On Nov 15, 2008, at 12:10 PM, Steven Rostedt wrote:

> Kumar Gala wrote:
>> For some unknown reason at Steven Rostedt added in disabling of the  
>> SPE
>> instruction generation for e500 based PPC cores in commit
>> 6ec562328fda585be2d7f472cfac99d3b44d362a.
>>
>
> The unknown reason was that my PPC64 failed to compile without  
> it ;-) It was unknown because I forgot to mention that in the change  
> log (my bad).

Are you sure you were building a ppc64 kernel?  This makes no sense in  
that the -mno-spe flag should not be relevant at all to such a kernel  
build.  (No ppc64 chip has SPE support and thus the compiler doesnt  
support generation of the instructions in that mode).

Were you building some ppc32 targeted kernel?

- k
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